7a+4a-20=8a+1

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Solution for 7a+4a-20=8a+1 equation: 



7a+4a-20=8a+1

We move all terms to the left:

7a+4a-20-(8a+1)=0

We add all the numbers together, and all the variables

11a-(8a+1)-20=0

We get rid of parentheses

11a-8a-1-20=0

We add all the numbers together, and all the variables

3a-21=0

We move all terms containing a to the left, all other terms to the right

3a=21

a=21/3

a=7

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